Tellurian.



No. 776,911. PATENTED DBG. 6, 1904; l A. HOSKING.

TELLURIAN.

APPLIOATION FILED 00T. 1s, 190s.

TTHNE YS x@ v .a mi

Patented December 6, 1904.

PATENT OEEICE.

ALFRED HOSKING, OF AUCKLAND, NEW ZEALAND.

TELLUHlAN..

SPECIFICATION forming part of Letters Patent No. 776,911, dated December 6, 1904.

Application filed October 13, 1903. Serial No. 176,883. (No model.)

To @ZZ whom t may concern,.-

Be it known that l, ALFRED HosKINe, a subject of the King of Great Britain, and a resident of Auckland, New Zealand, have invented a new and Improved -Tellurian, of which the following is a full, clear, and exact description.

llhe object oi the invention is to provide a new and improved tellurian which is simple and durable in construction, easily manipulated, and arranged for demonstrating or illustrating the relative motions of the earth and moon around the sun.

The invention consists of novel features and parts and combinations of the same, as will be more 'fully described hereinafter and then pointed out in the claims.

A practical embodiment oi the invention is represented in the accompanying drawings, forming a part oi' this specification, in which similar characters of reference indicate corre sponding parts in all the views.

Figure l is a side elevation of the improvement. Fig. 2 is a sectional plan view of the same on the line 2 2 of Fig. 1. Fig. 3 is an end view of the same. Fig. 4 is an enlarged sectional side elevation of the suspending` mechanism for the representation of the moon, and Fig. 5 is an enlarged view of the adjustable ring with the markings thereon.

On the upper end of a suitably-constructed standard A is arranged the representation B ofthe sun, and on the said standard is mounted to swing or turn horizontally an arm C, provided at one end with a handle C', adapted to be taken hold of by the demonstrator i'or swinging the arm C around on the standard A as the axis. On the free end of the arm C is mounted to turn a globe D, representing the earth and having a vertically-disposed vshaft D', journaled in suitable bearings on the free end of the said arm C, and on the shaft D is fastened a bar D2, in which is journaled the axis D3 oi' the globe, as will be readily understood by reference to Fig. 1.

On the shaft D of the globe is secured a sprocket-wheel F., connected by a sprocketchain E with a sprocket-wheel F2, fixed on the standard A, so that when the arm C is swung around by 'the demonstrator the chain F] rolls oi the lixed sprocket-wheel E, and

consequently turns the sprocket-wheel E and the globe D, the center ot' which lies in a horizontal plane extending through the center ot' the representation oil.I the sun B.

As shown in the drawings, the sprocketwheel E2 has one more tooth than the sprocketwheel E, so as to cause a rotation of the globe D in such a manner as to illustrate the preeessional motion of the earth.

On the free end of the arm C is arranged a cross having a transverse arm Cz and a longitudinal arm C, and on the terminals of the said arms U and C is mounted a trame F, having a transverse U-shaped bar F extending around the globe diametrieally in a transverse direction, and the upper end of the bar F is joined by the upper end of a bar F2, rising from the arm C and standing at right angles to the bar F. The center of curvature ol the.curved portions of the bars F or F coincides with the center of the globe, as will be readily understood by reference to the drawings.

Near the upper end of the bar F2 is fulcrumed the lug GH o'l" an arm Gr, connected at its free end by a universal joint H with the representation oi' the moon l, having a semispherical hood l', and one halt' portion of the moon is silvered and the other halt' portion is blackened. The hood l is used to conceal that half portion of the moon which is turned from. the earth, (represented by the globe D,)while the silvered half portion oil the representation of the moon l is always turned toward the A representation oi' the sun B.

The representation ot the moon l is adapted to be manually rotated on its axis, and consequently during the revolution of` the moon it gradually assumes such position relative to the hood that the latter covers the half of the moon farthest from the representation of the earth, and consequently a full moon is illustrated. By continuing the `revolution of the representation ot' the moon the hood eventually conceals the side of the moon nearest the sun, and thus a new moon is represented.

The universal joint H consists, preferably, of a rod H, extending centrally through the moon l and the hood I for both the moon and the hood to be turned loosely on the rod by IOO the operator, and on the upper end of the rod H is formed or secured a half-sphere H2, seated in a correspondingly-shaped socket G2, formed on the free end of the arm Gr, the said rod H extending through a slot in the socket for suspending the moon perpendicularly at all times.

rIhe lug G of the arm (Jr is connected by a link J and a clamping-screw J with the slotted portion F3 of the bar F2 to allow of adjusting the arm G up or down to any angle with the plane of the ecliptic, as the demonstrator may desire.

On the arm C is fixed a pointer K, showing the spot on the earth where the direct rays of the sun fall, as will be readily understood by reference to Fig. l. On the arm C and on diametrically opposite sides of the sprocketwheel E2 are arranged pointers L and L, indicating over an adjustable ring N, held on the standard A and on which, as shown in Fig. 5, are marked the months of the year, the equinoxes, the solstices, and the signs of the zodiac, so that the pointer L indicates the time of the year, while the pointer Lindicates the position of the sun in the Zodiac.

The lines 2l and 23 shown on the months of March and September indicate the equinoxes, and the lines 21 shown on the months of J une and December indicate the solstices.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A tellurian provided with a pivoted arm, a globe mounted to turn on the said arm on swinging the latter around, a cross at the free end of the arm, a frame rising from the said cross, a supporting-arm carrying a representation of the moon and pivoted on the said frame, and means for adjusting the supporting-arm on the frame to any desired angle with the plane of the ecliptic.

2. A tellurian provided with a pivoted arm, a globe mounted to turn on the said arm on swinging the latter around, a frame on the free end of the said arm, an angular supporting-arm for carrying a representation of the moon, pivoted on the said frame, and means for adjusting the said angular supportingarm on the frame, the said means comprising a link'pivotally connected with the angular arm and a clamping-screw for connecting the link with the slotted portion of the said frame, as set forth.

3. A tellurian provided with a representation of the moon, a supporting-arm for the representation of the moon, a hood for the said representation of the moon, and a universal joint for suspending' the said representation of the moon from the said arm, the said universal joint comprising a rod extending through the representation of the moon and through the hood, and on which the moon and hood can be turned by the operator, and a half-sphere on the upper end of the rod and engaging a corresponding shaped socket formed on the end of the arm, the socket having a slot through which the arm extends, as set forth. y

1i. A tellurian having an arm mounted to swing' around and provided at its terminal with a cross, a globe mounted to turn on the terminal of the said arm, and a frame erected on the said cross and consisting' of a transverse bar and a longitudinal bar jointed at its top to the top of the cross-bar, the center of curvature of the curved portions of the said bars coinciding with the center of the said globe, as set forth.

5. A tellurian comprising a standard carrying a representation of the sun, a manuallycontrolled arm mounted to turn on the said standard, a globe mounted to turn on the free end of the said arm, a gearing between the said standard and the shaft of the globe to rotate the latter, a frame on the free end of the said arm, a supporting-arm for carrying a representation of the moon, the said arm being provided with a lug fulcrumed on the said frame and a link connected with the said lug and adjustably connected with the said frame, as set forth.

6. A tellurian, comprising a standard supporting a representation of the sun, a manually-controlled arm mounted to turn on the standard, a globe mounted to turn on the free end of the arm, a gearing lbetween the said standard and the shaft of the globe to rotate the latter when the arm is turned, a frame on the free end of said arm, a supporting-arm for carrying a representation of the moon and pivoted on the said frame, a pointer fixed on the said manually controlled arm to show where the direct rays of the sun fall on the globe, an adjustable ring held on the standard and having marked thereon the months of the year, the equinoxes, the solstices and the signs of the zodiac, and pointers carried by the arm and indicating over the adjustable ring at diametrically opposite points, as set forth.

7. A tellurian comprising a standard supporting a representation of the sun, a sprocketwheel iixed on the said standard, a manuallycontrolled arm mounted to swing on the 'standard, and provided at one end with a handle, a globe having a vertically disposed shaft mounted to turn in the free end of said arm, a sprocket-wheel secured on the said shaft and having lone tooth less than the sprocketwheel on the said standard, a sprocket-chain connecting the sprocketwheels with each other, an adjustable ring held on the stand- IOO IIO

ard and on which are marked the months of standard, 'a globe mounted to turn on the free end of the said erm, e gearing between the standard and the shaft of the globe, a frame on the free end of the said arm and comprising e ,transverse U -shnped bar extending eroundlthe globe, and :t bar standing at right angles to the BJI-shaped bar land connected et its upper end to the top of said transverse bnr, und a supporting-arm for earryinga representation of the moon, the said arm being fulernmed to the last-mentioned bar near its junction with the transverse bar, and means for adjusting the said supporting-arm.

9. A telluran, comprising a standard supporting a representation ofthe sun, e sprocket- Wheel liXed on the seid standard, a manuallyeontrolled arm mounted t'o swing on said standard and provided at one end with a han dle, a globe mounted to turn on the free end of the said arm, :L sproeletdvlieel secured on the shaft of the globe and having one tooth less than the spi'oeketwvheel on the standard, a sprocket chain connecting the sprocket Wheels with each other, a :frame carried et the free end of the arm, and n supportingarm carrying a representation of the moon and adjustably Connected with the said frame, as set forth.

In testimony whereof I have sign ed my name to this speci liontion in the presence of two subseribing Witnesses.

ALFRED HOSKING.

Witnesses F. DILLNei-IAM, WILLIAM HANsoN. 

